| 학회 | 한국재료학회 |
| 학술대회 | 2011년 봄 (05/26 ~ 05/27, 제주 휘닉스 아일랜드) |
| 권호 | 17권 1호 |
| 발표분야 | C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 | Estimation of output voltage and magnetic flux density for an inductive charging system with different core properties |
| 초록 | Recently much attention has been focused on the inductive charging due to convenience of enabling a wire-free charge and a far lower risk of electrical shock, when compared with conductive charging. The disadvantage of the inductive charging is its lower efficiency and increased resistive heating in comparison to direct contact. For high efficiency wireless charging, the output voltage for the wireless electrical vehicle is necessary to investigate. The induced magnetic flux density in electrical vehicle system consisting of cores with different magnetic hysteresis and permeability was simulated using Ansoft Maxwell program. To clarify the influence of hysteresis nature, relative permeability (μr) was properly controlled in the range of 26~90. The saturation magnetization (BS) and coercivity (HC) were also controlled 0.89~1.60 Tesla and 109.22~200.78 A/m, respectively. The results exhibited gradual concentration of high magnetic flux density into the core parts of the pick-up by the increasing relative permeability and saturation magnetization value. It is found that the induced magnetic flux density between the power supplying and pick-up unit works as a key factor for rapid induction and charging in wireless vehicle system. The output voltage of the inductive charging electrical vehicle enhanced from 113 to 253 volt. Consequentially, the magnetic flux density in the inner core and the output voltage were effectively enhanced by changing magnetic properties. Ref. 1. W. Chandrasena, P.G. Mc Laren and U.D. Annakkage, Simulation of hysteresis and eddy current effects in a power transformer, Electrical Power Systems Research, 76 (2006) 634-641. |
| 저자 | Ji Hea Park1, Sang Woo Kim2 |
| 소속 | 1Clean Energy Center, 2Korea Institute of Science and Technology |
| 키워드 | Magnetic core; Magnetic flux density; Output voltage; Electrical vehicle |
